Question 1171646
S = Simon's present age
s = son's present age
Write an equation for each statement
:
Simon is now 4 times as old as his son 5 years ago.
S = 4(s-5)
S = 4s - 20
Simon is exactly one and half times as old as his son will be 10 years from now
S = 1.5(s+10)
S = 1.5s + 15
Replace S with (4s-20)
4s - 20 = 1.5s + 15
4s - 1.5s = 15 + 20
2.5s = 35
s = 35/2.5
s = 14 yrs is son's age
:
Determine Simon's present age??
S = 4(14-5)
S = 4(9)
S = 36 yrs is Simon's age
:
Check in the 2nd equation
S = 1.5(14+10)
S = 1.5(24)
S = 36